20.4
06/16/1987
RPI 869
The letters patent expired on 07/27/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 06/16/1987. We update with every new RPI gazette, published weekly.
Applicants
R. A. (pessoa física)
Inventors
No inventors listed.
IPC Classification
No IPC classification.
Publications in the Brazilian Industrial Property Gazette (RPI).
06/16/1987
RPI 869
#13.1
09/21/1982
RPI 622
#9.1
06/01/1982
RPI 606
11/24/1981
RPI 579
#6.1
10/27/1981
RPI 575
#21.1
07/27/1993
RPI 1182
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